1 files changed, 1 insertions, 0 deletions
diff --git a/unwind.h b/unwind.h
index 26276772..98b7a58a 100644
--- a/unwind.h
+++ b/unwind.h
@@ -49,6 +49,7 @@ struct uw_block {
 struct uw_dynamic_env {
   uw_frame_t *up;
   uw_frtype_t type;
+  uw_frame_t *up_env;
   val func_bindings;
 };